Automatic temperature-regulator.



PATENTEE MAE. 26, 1907. E. A. BEGKWITH.

AUTOMATIC TEMPERATURE REGULATOR.

APPLICATION FILED AUG. 25, 1906.

5 SHEETS-SHEET l.

5] 4401244 607, Fra/IL/e- 07. Beak wzlt/v u qwibmeooao Wi d WEE am 'No;848,280. I PATENTED MAR. 26, 1907.

P. A. BEOKWITH. AUTOMATIC TEMPERATURE REGULATOR.

APPLICATION FILED AUG. 25, 1906.

5 SHEETS-SHEET 2.

I wwwmw -"Be/O/OWw/U B7 8 PATENTED MAR. 26, 1907.

P. A. BECKWITH. AUTOMATIC TEMPERATURE REGULATOR.

APPLICATION FILED AUG. 25, 1906.

5 SHEETS-SHEET 3.

PATENTED MAR 26, 1907.

P. A. BECKWITH. AUTOMATIC TEMPERATURE REGULATOR.

APPLICATION FILED AUG. 25, 1906.

5 SHEETS-SHEET 4.

wea /new wi/bmo/ww PATEN TED MAR. 26, 1907.

F. A. BEGKWITH. AUTOMATIC TEMPERATURE REGULATOR.

APPLICATION FILED AUG. 25, 1906.

5 SHEETS-SHEET 5.

UNITED STAEE PATENT OFFICE.

FRANK A. BECKWITH, OF EVANSTON, WYOMING, ASSIGNOR or ONE- THIRD TORUDOLPH DUMBECK, OF sALT LAKE CITY, UTAH.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed August 25, 1906. Serial No. 331.978.

To all whom it may concern.

Be it known that I, FRANK A. BECKWITH, a citizen of the United States,residing at Evanston, in the county of Unita and State of Wyoming, haveinvented-certain new and useful Improvements in AutomaticTemperature-Re'gulators and I do hereby declare the following to be afull, clear, and exact de- 'maintained at a certain degree of heatduring one portion of the twenty-four hours and at adifferent degree ofheat during the other portion of the twenty-four hours, the h nge beingeffected automatically by a time-controlled mechanism.

ith this object in view my invention conzlg sisfis' in a thermostatadapted to control the dampers of a furnace or valve of a steam or otherheat-supplying pipe or main and a means under the control of a timemechanl'sm which'will cause the thermostatto' so operate'. the dampersor valve as to keep the heat at one temperature during a portion of thetwenty-four hours of the day and at a g; different temperature theremaining portion 'f of the twenty-four hours.

and combinations, the preferred form of My invention also consists incertain parts which will be.- first described in connection with theaccompanying drawings and then the inventionparticularly pointed out inthe appended claims.

Referring to the drawings, wherein I show the preferred form of myinvention and l wherein the same part is designated by the samereference-numeral wherever it occurs, Figure 1 1s a diagrammatic planview of a thermostat and a t1mecontrolling mechanism for the thermostat,showing also the circults by which the thermostat is controlled andshowing the circuits and motor controlled by the thermostat.- Fig. 2 isa cen- I tralplongitudinal section of one form of thermos tat which Imay use in connection with my lnvention. Fig. 5 is a section on line'3 3of Flg. 2 looking downward. Fig. .4 is a section on line 3- 3 of Fig. 2.looking upward. Fig. 5 is a section taken on line 5 5 of Fig. 1. Fig. 6is a diagrammatic view showing the controlling mechanism for thethermostat. Fig. 7 is a front view ofv a modified form of theclock-operated mechanismfor controlling the thermostat. Fig. 8 is adiagrammatic view of Fig. 7, showing the circuits of the clock-operatedmechanism. Fig. 9 is a section taken on line 9 9 of Fig. 7. Fig. 10shows the perspective views of the contactarm.

In the following description I will'first describe the thermsotat andits controlling mechanism, then the clock-operated mechanism forcontrolling the thermostat, and finally the circuits and the operationof the entire device. I 1 deslgnates a base-plate which preferably isformed of vulcanite or other suitable insulating material, from whichextends the supporting-posts 2 2. a

3 design A .S a plate supported on the upper ends of the posts 2. l

4 designates a post on the plate 3 and on which is supported one end ofa suitable thermostat, formed in the construction shown by a coil 5.

Gdesignates an arm which extends outwardly from the free end of thecoil, the free end of the arm extending between the pair of posts 7 8,provided with .etscrew5 9 9, the inner ends of the screws standing inline with the free end of the arm 6. Anyincrease in temperature causesthe coil 5 to expand and move the free end of the arm 6 in the form offall in temperature causes the coiltocontract and move the free end ofthe arm 6 toward the left. This causes thev arm to oscillate under theinfluence of changes of temperature between the screws 9 1n theconstruction shown to the right, whereas any posts 7 and 8 and intocontact first with one screw and then the other.

10 designates a plate pivoted on the under face of the plate 3 by beingsu ported between the under surface of the p ate and the top of a post11, the platerbeing fast on the post 11, which is pivoted between thebase 1 and the plate 3 and insulated from'the plate. The plate 10 on itsside opposite the post 11 is provided with a rack 12, with which engagesa gear 13, fast on a shaft 14, extending through the nlate 3, the shaftbeing provided on its upper end with an operating-knob 15, the knobpreferably carrying a pointer 16, operating over a scale 17. To theplate 10 are secured the posts 7 and 8, the posts being insulated fromthe plate by means of the insulating-washers 18, of mica or othersuitable material. The thermostat above described is an ordinarywell-known type of thermostat, and its construction forms no part of myinvention.

19 20 designate two electromagnets which are secured to the base 1, and21 is an armature'for these magnets carried on the post 1 1, thearmature being secured to the post at its middle portion and the magnetsbeing so arranged that when one of the magnets is energized the postwill be'oscillated in one direction and when the other magnet isenergized the post will be oscillated in the other direction. the posts7 and 8, is secured to the post 11, this will cause the posts 7 and 8 tomove toward and away from the free end of the arm of the thermostat andcause the heat-controlling mechanism to operate at differenttemperatures.

22 22 are spring-arms mounted on the rear side of the armature 21 andadapted to make contact alternately with set-screws 23 23, carried byposts 24 and 25.

26 designates a clock mechanism of the ordinary type, except that it isso geared as to cause the shaft 27 to make one revolution in twenty-fourhours. I 28 1s a plate, preferably formed of vulcanite locatedconcentrically to each other and separated from each other. Within thesegmental rings 29, 30, and 31 there is located a complete ring 32.

33 designates an arm secured to the end of the shaft .27 and carrying atits .outer end a pair of fingers 34 35, shown as being formed bysplitting a single finger. The fingers 34 35 and arm 33 are preferablyformed of metal, as it is necessary that they be in electric connectionwith the shaft 27.

36 designates a second arm, which at its outer end carries thecontact-fingers 37 and 38. This arm is insulated from the shaft 27 andthe arm 33.

39 is a block of insulating material secured to the arm 36, and in thisblock is supported a pair of contact-fingers 40 and 41.

The fingers 34 35 are connected together. The fingers 37 38 areconnected together, and the fingers 40 41 are. connected together,making three sets of contact-fingers. The finger 35 extends outside thesegmental ring 29 and is adapted to contact with a post 42. Tbefin er 34runs in contact with the segment T e finger 37 runs in contact with theAs the plate 10, carrying In the form of my invention shown in Figs. I

1 to 6, inclusive, the time-operated mechanism is adapted to. controlthe thermostat so as to increase the heat at six a. m. and decrease theheat at nine p. m. The segmental rings 29, 30, and 31 consequentlyextend from the portion of the dial 28 corresponding to six a. 1n. tothe portion corresponding to nine p. m. The posts 42 and 43 are inposition to be in contact with their fingers at nine p. m., while thepost 44 is in position to be in contact with the finger 40 at six 8.. m.In the form of construction shown in Fig- 1 45, 46, and 47 are segmentalrings corresponding to 29, 30, and 31, which extend between the ends ofthe segments 29, 30, and 31 to complete the circle. The rings 45, 46,and 47 are, however, merely blanks and have no electrical connectionwith any part of the mechanism and are merely for the purpose ofsupporting the fingers and causing them to run smoothly during the wholeof their revolution.

' 48 49, 50 51, 52 53, 54 55 are pairs of posts, and 56 is a bar pivotedon the post 48. 57 is a bar pivoted on the post 50. 58 is a bar pivotedon the post 52, and 59 is a bar pivoted on the post 54. The bars 56, 57,and 58 are each provided with a notch 60, extending'in one direction,and the bar 59 is provided with,

a notch 61, which extends in the opposite direction from the notches 60in the bars 56, 57, and 58. These notches are ada ted to engage with theposts 49, 51, 53, an 55, respectively. 62 is a bar connected to the bars56, 57, 58, and 59 by pivots 63, and 64'is an operating-handle securedto the bar 62. The bar 62 is preferably formed of some insulatingmaterial, such as vulcanite, though it may be formed of metal with thebars 56, 57. 58, and 59 insulated therefrom. By this construction allthe bars 56, 57, 58, and 59 are caused to move simultaneously, and thesebars are so connected to the bar 62 that when the bars 56, 57, and 58are in contact with the posts 49, 51,'and 53 the bar 59 will be out ofcontact with the post 55 and when the bar 59 is in contact with its post55 the other bars will be'out of contact. These bars and postsformswitches by which the operation of the mechanism may be changed, soas to cut out the clock-operated mechanism from the thermostat, ifdesired, in a manner to be hereinafter more fully described, wherein-byreason of the wiring with one throw of the swltch 0st 42 is thrown outof contact, while a path mde endent of the segmental rings is made for te current, so that the thermostat may operate during the fulltwenty-four hours,

' reading exposed to view that with one throwheat off entirely at 9 P.M.

and bar-56 from 48 to 49 makes a circuit for the current controlling theelectromagnets to shift thermostat regulation up or down a given numberof degrees. With the reverse throw of the switch bar 56 from 48 to 49 isout of contact, post 42 is in contact, and the shunt-path before openedindependent of the segmental rings is broken, and the only path forcurrent to flow is through segmental rings and fingers on bar or arm 33.Consequently current may flow by control of thermostat only during thosehours covered by segmental rings and is out entirely from nine p. m. tosix'a. m. The various shunt-wirings are more fully describedhereinafter.

The bar 62 is so arranged in reference and combination with. twoindicating plates, which may be made of metal with lettering stampedthereon or may be made of other suitable material with proper letteringthat with one throw of the switch the bar 62 covers the word not on theindicating-plate on one side and exposes it to be read on the otherside. With the reverse throw of the switch the word not, reviouslycovered, is exposed to be read, and the word not in the oppositeindicating-plate, previously exposed, is covered.

The indicating-plate on one side reading Clock does not turn heat offentirely at 9 P. M. and the opposite indicating-plate reading Clock doesnot turn heat down 10 degrees at '9 P. M., and the words not on eachindicating-plate being so placed and situated in reference to theopposite ends of the bar 62 that theend of the bar 62 covers fromreading a word not on one indicating-platewhile exposing it for readingon the other alternately with the throw of the switch, by this meansindicating from the of the switch Clock does turn heat down 10 degreesat 9 P. M., while the reverse plate reads Clock does not turn heat offentirely at 9 P. M., and with the reverse throw of the switch theindicating-plates would read Clock does not turn heat down 10 degrees at9 P. M., while the reverse plate would read Clock does turn It will thusbe seen that each throw of the switch by varying the wiring connectionsgives a separate function to the clock-controlling mechanism, which ismorefully described hereinafter.

65 designates a motor by means of which the damper or steamvalve, as thecase may be, are operated. This motor I have merely indicated on thedrawings, as it forms no part of my present invention. For a descriptionand illustration of a motor which may be used for this purpose seepatent to Butz, No. 390,281, patented October 2, 1888.

I will now describe the wiring of the mechanism and by means of whichthe clock is caused to control the circuits between thermostat and motorand between the two electromagnets which vary the point of regulation ofthe thermostat, thereby effecting the desired results in each circuitfor each function of the clock-controlling mechanism.

66 indicates the battery by which the motor 65 is operated. One side ofthis battery is connected by a wire 67 to the binding-post 130, thenceby wire 131 to pivot 52. A wire 132 connects pivot 53 with the case ofthe clock at 68, from which point the current passes through the gearingto the central stud 2 7, thence by arm 33, which is carried in contactwith 27, to fingers 34and 35, finger 34 hearing on segment 29 and finger35 placed so as to makecontact with post 42 at nine p. m. The other sideof the battery is connected by a wire 69 to one of the bindingpost 4,thereby with coil 5 and arm 6 ofthermostat, which by increase oftemperature expands to set-screw in 8 and contracts to set-screw in 7.Wire 76 connects motor 65 with post 75, which post is connected by awire to pivot 55. Wire 74 connects pivot 55 to post 73. Wire 72 connectspost 73 to post 71. Wire 70 connects post 71 with screw 8, containingset-screw 9, (right or off.) 1 Wire 90 connects motor 65 with post 190,thence to pivot 50. Wire 92 connects pivot 50 with segment 31. Wire 89connects pivot 51 with. post 88. Wire 87 connects post 88, with post 86.Wire connects post 86 to screw 7, containing screw 9, (left or on.) Wire82 connects post 81 with segment 29. Wire 91 connects post 88 withsegment 30. Wire 83 connects post 81 with pivot 53. Wire 78 connectspost 42 (shut off) with pivot 54. A wire connects pivot 53 to case ofclock on metal at 68, thence through gearing to central stud 27, and viaarm 33 to fingers 34 and 35. The above completes the thermostatcircuits.

The following are the circuits from battery 105 through electromagnets19 and 20: Battery 105 is connected by wire 106 to post 107. l/Vire 108connects post 107 to post 109. Wire 110 connects post109 with post 111,from which point a wire connects post 111 to post 11, carrying armature21. The springs L nects 24 to one end of the winding on-magnet 19, andwire connects the other end of the winding on magnet 19 with post 96.Wire 94 connects one end of the winding on magnet 20 to 25, and wireconnects the other end of the winding on magnet 20 with post 101. Wire102 connects post 101 with post Lil 103. Wire 104 connects post 103 topost 44, corresponding to six a. m. Wire 97 connects post '96 with post98. nects post 98 to post 43, corresponding to nine p. In. Wire 113connects the other side of the battery 105 to post 114. Wire 115connects post 114 to pivot 49, thence by bar 56 to pivot 48 (whenswitch-bar 56 is closed) and by wire 116 to ring 32. The above wiringcompletes the circuit from battery 105 through electromagnets 19 and 20.

Having described the wiring, I will now trace the path of the currentwhen bar 6 expands to the screw in 8, with the switches shown in Fig. 1,wherein bars 56, 57, and 58 are closed into contact and bar 59 is brokenfrom contact: Currents start at battery 66, via wire 67 to centerbinding-post to 52 and bar 58 being in contact thence to 53 withoutreference to wire to 68 or concentric rings, and thereby, by reason ofbar 58 being in Contact, a path is made for current after nine p. m. bywire 83 to 81, thence by wire 80 to post 2', which is in contact withpost 4 and bar 6, to the screw in 8, thence by wire 70 to 71 post,thence by wire 72 to post 73, thence by wire 74 to pivot 55, but bar 59being out of contact current cannot pass to 54, wire 78 to post 42, sothat with throw of switch shown in Fig. 1 point 42v is not in circuit,from 55 to post 75, thence by wire 76 to inotor 65 and back by wire 69to battery 66, completing circuit. This circuit would be theshutting-ofi' circuit, by reason of bar 6 having expanded with increaseof temperatlgfre and thermostat operating to shut heat 0 I will nowtrace thecurrent when bar 6, by reason of the previous contact justmade, contracts now and touches point in 7, with switch-bars in sameposition 57 and 58 closed and 59 out of contact: Current starts at batte66 along the circuit hereinbefore explaine fully, via-centerbinding-post, 52-, 53, 83 wire to 81, to post 2, thence to bar 6, andbar 6 being contact to screw in 7, thence by wire 85 to post 86, thenceby wire 87 to post 88, but bar 57 being closed from to 51' circuit isestablished by wire 89 from post 88 to post 51, across bar 57 topivot50, thence by wire 90 to post 190, thence to motor and by wire 69 backto battery 66, completing circuit. Wire 91 from post 88 to segment 30would have circuit established across to segment 31 only during thatportion of the twenty-four hours when arm 33 carrying contact-fingers 37and 38 would be in contact with segments 30 and 31, or between the hoursof six a. m. and nine'p. m., so that if the time was later than nine p.m. and fingers 37 and 38 were out of contact the circuit would bebrokenbetween 30 and 31, and no current could pass on' wire 92 from segment 31to ivot 50, thence to 51; but in the position s own in Fig. 1 bar 57estab- Wire 99 conlishes the circuit from 51 via 89 to 88, thence to 50,via to motor 65, and the circuit broken after nine p. m. on wire 9 tosegment 30, which after nine p. m. is out "of contact withsegrnent 31,thence by wire 92 to point 50, is established otherwise b the bar 57.

" Having shown the circuit t ough thermostat in the position of theswitches shown in Fig. 1, I will now trace the circuit from batterythrough electromagnets operating by automatic varying of the temperaturemaintained by the thermostat, which from the foregoing explanation isseen to operate by reason of bars 57 and 58 being in contact throughoutthe full twenty four hours. When arm 33travels to the positioncorresponding to nine p. m., fingers 40 and 41 establish a circuit fromring 32 to point 43. In this position the path of the current is asfollows: from battery 105 by wire 106 to post 107, by wire 108 to post109, by wire to post 111, thence by wire connection previously explainedto 11 in contact with armature 21, which is in contact with springs 22thereon, and magnet 20 having last operated at the previous six a. m.spring 22 is in contact with screw in 24, thence by wire 93 throughmagnet and out by wire 95 to post 96, thence by wire 97 to post 98,thence by wire 99 to post 43 and across fingers 40 and 41 to ring 32,thence by wire 116 to pivot 48, and bar 56 being closed into contactthence to pivot 49, thence by wire to post 114,

-.i 1id thence by wire. 113 back to battery 105,

I will now trace the op osite circuit from theone last described: T ecurrent starting at the battery 105 passes by wire 1 06 to post 107, bywire 108 to post 109, by wire .110 to post 111, thence to 11 andarmature carried on 11 to springs 22 22, carried on armature. Magnet 19having last operated, contact is broken between 22 and 24, but isestablished between 22 and 25. Current passes from spring 22 to 25,thence by wire 94 into magnet 20, which is thus energized, out by wire100 to post 101, thence by wire 102 to post 103, thence by wire 104 topost 44, corresponding to six a. m., which is now in circuit by fingers40 and 41 to ring 32, thence by wire 116 to pivot 48, across bar 56,which is closed in contact in Fig. 1, to pivot 49, thence by Wire 1 15to post 114 and by wire 113 back to battery 105, completing circuit.

From the description given in tracing the thermostat-circuithereinbefore it was shown that thermostat makes and establishes circuitby expansion and contraction during the whole twenty-four hours in theposition of theswitch shown in Fig. 1 and bar 56 being brought intocontact when bars 57 and 58 are also in contact, that while bars 57 and58allow a path for the thermostatcircuit during the full twenty-fourhours that bar 56 establishes a circuit which is completed at nine p. m.to shift armature on plate carrying posts 7 and 8 of thermostat,

whereby magnet 19 is energized, and posts are changed in positionautomatically, so that thermostat operates on a less temperature, and atsix a. m. the opposite circuit is established, whereby magnet 20 isenergized and the plate carrying posts 7 and 8 is changed back to theproper and higher temperature during the hours six a. m. to nine p. 111.

Having traced the circuits with bars 56 57 and 58 closed into contactand bar 59 out of contact, I will now trace the circuits with theopposite throw of the switch and bars 56 57 out of contact and bar 59closed into contact.

Beginning first with the circuit from battery 105, it will be seen thatbar 56 being out of contact no current may pass, and at nine p. m.electromagnet 19 is not energized, nor is electromagnet 20 energizedatsix a. m., and it will be hereinafter shown that valve or dampers willbe closed at nine p. m. and all heat off and opened again at six a. m.The.

description of the indicating-plates hereinbefore given shows that witheach throw of the switch the exposed portion of each plate reads whatfunction the clock will perform for each throw of the switch. With bars56, 57, and 58 out of contact and bar 59 in contact the circuit is asfollows: Current startingat battery 66 passes by wire 67 tocenterbinding-post, thence'by wire to pivot 52; but bar 58 being out ofcontact the circuit from pivot 52 to 53 is broken, and wire 83consequently receives no current. The current, however, will between sixa. In. and nine p.'m. pass from the pivot 52 through the wire 132 to theclock-case at 68, thence through the clockgears to the clock-shaft 27,through the arm 33 to fingers 34 and 35, thence through segment 29 towire 82, to post 81, by wire 80 to post 2 ,which is in contact with post4 and arm 6, where, considering the thermostat to be expanding byincrease of temperature, arm 6 expands to screw in 8 to shut heat off.Current continues by wire 70 from 8 to post 71, by wire 72 to post 73,by wire 74 to pivot 55,

, thence to post 75, and by wire 76 to motor Bar 59 being closed into 30and 31.

heat by closing damper or valve. Conseopposite indicating-plate reads,()lock does not turn heat down 10 degrees at 9 p. m. as bar 56, theelectrical connections to which have been hereinbefore traced, is out ofcontact, and no current can pass through electromagnet-circuit.

having traced the current for the shuttingoil? operation of motor, Iwill now trace current on same throw of switch, bars 56, 57, and 58being out of contact and bar 59.being closed into contact, for thecontraction of arm 6 of thermostat for the operation of motor to opendampers or steam-valve to turn heat on. Current starting at battery 66passes, as previously shown, to center binding-post to pivot 52 andthence by circuit previously traced to 68 27 33 29 during hours of fromsix a. m. to nine p. m., but no circuit established after nine p. In.from 29, thence to 81 2 4 and arm 6, which is con sidered as havingcontracted, to screw in 7 to turn heat on, from screw 7 by wire 85 topost 86, by wire 87 to post 88. Wire 89 from post 88 to pivot 51 is outof circuit by bar 57 being out of contact, and pivot 51 is out ofcircuit with pivot 50. Hence wire'89 from post 88 bears'no current, andcurrent is passed by wire 91 from post 88 to segment 30, and fromsegment 30 circuit is established across to segment 31 by fingers 37 and38 only durin the hours corresponding to that portion 0 the dial coveredby segments 30 and 31, or from six a. In. to nine p. m., after whichtime circuit is broken between 30 and 31 and as they are on the circuitoperating the motor to turn heat on no heat can be turned off after ninep. m; From segment 31 current passes by wire 92 to pivot 50, thence bywire to post 90 and to motor 65, from which it passes by wire 69 back tobattery 66, completing circuit.

Segments 30 and 31 are shorter in length on the side corresponding tonine p. 111. than segment 29 and position of post 42. Consequently arm33 by fingers 34 and 35 remains in contact a short period of time afterfingers 37 and 38 have passed out of contact with segments 30 and 31,and being out of contact current cannot pass through segments 30 and 31to turn heat on by operation of motor; but contact is made during thefurther travel of arm 33 ina short period from 29 segment to post 42,because of the greater length of segment 29 and the further advancedrelative position of post 42 from the ends of segments Hence the motorcannot be operated to turn heat' on at nine p. In. irrespective ofposition of arm 6 of thermostat, but is a short period after nine p. m.operated to for position of bar- 59 closed into contact between pivots54 and 55, reads Clock does shut heat off entirely at 9 p. m. on oneplate and reads Clock does not turn heat down 10 degrees at 9 p. m. onthe other plate, because of bar 56 being out of contact andelectromagnetrircuit broken.

The function of the clock-controlling mechanism by reason of the variouscircuits and switch is twofold. YVith one throw of switch heat isentirely shut off by operation of motor 65 by circuits established,during which time the switch is so thrown, the automatic shifting of theelectromagnets is out of circuit, while with the reverse throw of theswitch heat may be supplied during the full twenty-four hours; butautomatically from the form of my invention shown in Fig. 1 thethermostat is shifted at nine p. m. to supply heat for a lower regulatedtemperature and is automatically shifted back to the former higherregulated temperature at six a. m. to continue until the following ninep. m., the throw of the switch for each position exposing to be readwhich function the clock will control.

In Figs. 6 and 7 I have shown a modified form of the clock-operatedstructure by means of which the time at which the thermostat is changedor at which the time the thermostat is cut outfrom operating the motormay be varied. This I effect by providing means for varying the lengthof the segmental rings 29, 30, and 31 and at the same time so mountingthe contact-posts 42, 43, and 44 that their position may be changed. Inthe form of construction illustrated in the drawings I effect this bycutting away the portion of the clock-face between seven a. m., countingbackward to seven p. m., just outside the line ofthe outer circumferenceof the segmental ring 29. In the cut-away portion so formed I- mount apair of sector-shaped segments 120 121, the segments resting upon aninwardly-projecting ledge 122 and an outwardly-projecting ledge 123. 124vare areshaped projections which extend from the sides of the segments120121 and which are adapted to enter guide-slots 125, formed in therings 29, 30, and 31, respectively. The segment 121 carries thecontact-posts 42 and 43, while the segment 120 carries the contactpost44. The position of the segments 120 121 can be adjusted, as will bereadily understood, and by the adjustment the lengthQof 31 and theirextensions formed by the pro- I j ections 124 can be varied. Theposition of the segments also determines the time when the fingers comein contact with the posts 42, 43, and 44. In the form of constructionshown the device may be set so as to operate any time between four andsix oclock in the morning and'between eight and ten o'clock at night, asmay be desired.

In the drawings, by means of which I have illustrated my invention, Ihave not shown the furnace and dampers or the steamvalve, as the casemay be, which are operated by the motor 65, as this construction is oldand well known. I have also not illustrated the parts of my apparatus asthey would appear 1n actual use. In actual use the motor andthebatteries are preferably located adjacent to the furnace.v -Thethermostat is preferably located in a portion of the house where a meantemperature is obtained, and the clock may be located adjacent to thethermostat or any other convenient locality. I have in the drawingsillustrated these parts as adjacent to each other in order to simplifythe illustration thereof.

In the foregoing description I have described what I believe to be thepreferred form of my invention. I desire to have it understood, however,that the particular form in which my invention is shown and which I havedescribed merely illustrates one form of my invention, and many changesmay be made in the form, construction, and

arrangement of parts without departing from the spirit of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is 1. In a temperature-regulatingsystem, thecombination with means for maintaining an unvaried predeterminedtemperature for a predetermined period of time, including a thermostat,and means for periodically and automatically adjusting the thermostat tocause subsequent automatic and successive variations of temperature atthe expiratlon of successive predetermined periods of time.

2. In a temperature-regulating system, the combination with means formaintalmng' a predetermined temperature, lncludmg a thermostat, of meansfor automatically and periodically adjusting said thermostat to cause itto maintain a different temperature.

3. In a temperature-regulating system,the combination with means formaintalmng a predetermined temperature for a predetermined time,including a thermostat, and means for automaticallyand periodicallyadjusting said thermostat to cause it to main.

tain a dnferent temperature during another period of time. x

4. In a temperature-regulating system, the

cmnbination with means for controlling the thermostat, of automaticallyad-- temperature including. a means for periodically and I ,justing thethermostat to cause the temperature to be changedv froma higher to aower degree and vice versa,

5..In,a temperature-regulating system, the

i combination withmeans including a thermostat for maintaining a desireddegree of temperature during a predetermined period of :time, andautomatic means for causing succ combination cessive variations oftemperature atpredetermined intervals of time.

. 6. In a temperature-regulating system,the combination with meansincluding a thermostat for maintaining a desired degreeof temperatureduring a predetermined'period of time and automatic means forcausing'suc cessive variations of temperature of predetermined amount atpredetermined times.

7. In a temperature-regulating system,the with means for controlling the-temperature including a thermostat said oscillate under thermostatcomprising an arm adapted to variations of temperature, a pair of postsbetween which the arm is adapted to oscillate and with each of which thearm may make contact, means for varying the position of the posts inrelation to the combination arm, a clock mechanism and means operated bysaid clock mechanism for automatically changing the position of theposts periodically, whereby the temperature is changed 'fI'OI DI ahigher to a lower degree and vice 'versa. v

8. Ina temperatureqegulating system,the

with means for controlling the;

temperature including a thermostat com-, prising anarm-adapted tooscillate under variations of temperature, apair' of posts between whichthe arm is adapted to oscillate and with each of which the arm may makecontact and means whereby the contact of the arm with one post willraise the temperature and with the other post will lower thetemperature, means for varying the position of the posts, said meansincluding an armature and a pair of electromagnets, one of saidelectromagnets being adapted to move the posts in,o ne direction, theother electromagnet'to move the posts in the other direction, a clockmechanism. and circuit connections between said clock mechanism and saidelectromagnets, whereby said electromagnets can be alternately operatedto change the position of the posts in'relation to the thermo' staticarm,

9. In atemperature-regulatingsystem, the combination with a thermostatand means under the control ofthe thermostat for regulatclrcuit-changing devices under the control of the-cloekmechanism,circuit connections betweenthe circuit-changing devices and thethermostat whereby the changes in the circuit willcause the temperatureto be changed from a higher to versa. v In testimony whereof I afiix Jin presence of two witnesses. 4 FRANK A. BECKWITH. Witnesses: i

JOHN. RXABNOLD, F. W. Bite;

'ing the temperature, of a clock mechanism,

a lower degree and vice my signature 1

